U.S. patents available from 1976 to present.
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Production of lithium metal grade lithium chloride from lithium-containing brine

Patent 4980136 Issued on December 25, 1990. Estimated Expiration Date: Icon_subject July 14, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventors

Assignee

Application

No. 380089 filed on 07/14/1989

US Classes:

423/179.5, Lithium423/181Ion exchanging or liquid-liquid extracting

Examiners

Primary: Russel, Jeffrey E.
Assistant: Bolam, Brian M.

Attorney, Agent or Firm

Foreign Patent References

  • 115415 DE. 12/13/1963

International Classes

B01D 011/04
C01D 015/04

Abstract

The present invention relates to a novel process for producing, from a lithium-containing brine, a substantially pure lithium chloride product. This product is particularly useful for the production of lithium metal by electrolysis.

Other References

  • D. S. Arnold-"Process Control in Boric Acid Extraction", 12-5-66
  • D. S. Arnold "A New Process for the Production of Boric Acid", 10-23-64
  • C. R. Havighorst "AP & CC New Process Separates Borates From Ore by Extraction", 11-11-63
  • R. R. Grinstead "Removal of Boron and Calcium from Magnesium Chloride Brines by Solvent Extraction", 11-4-72; Indus. Eng. Chem. Dev., vol. 11, No. 4, 1972 pgs. 454-460
  • N. C. Nelson and J. E. Hudgens "Liquid-Liquid Extraction of Boric Acid Using Aliphatic Alcohols"--Quarterly Progress Report for Period ending Mar. 31, 1953, New Brunswick Lab., pp. 24-32-34
  • W. F. Linke "Solubilities Inorganic & Metal-Organic Compounds", American Chemical Society, Washington, DC-1965, pp. 394-395
  • Kozerchuk et al. "Extracting Boron From Magnesium Chloride Brines", 1981
  • Kristanova et al. "Extraction of Boronfrom Bulgarian Natural Brines with Two-Ethylhexanol"-1984
  • Petrov et al. "Removal of Boron from Magnesium Chloride Solutions by Liquid Extraction"-1977
  • Smirnov et al. "Development of Technology for Extracting Boron from Hydro Minerals"-1982
  • Sologubenko et al. "Study of the Extraction Purification of Magnesium Chloride Solutions by Removing Boron"-198
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